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High-grade astrocytoma with ventricular invasion inadog

机译:高级别星形细胞瘤与心室入侵

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A 13-year-old female German Shepherd dog waseuthanised and submitted to necropsy after a 7-monthhistory of prolonged recumbency and vocalisation. Grossanatomical changes consisted of a well-demarcated,3.5×1.5 cm, soft red mass that effaced the right lateralventricle and compressed the adjacent neuroparenchyma.Histologically, elongate neoplastic cells with astrocyticmorphology were arranged in short bundles and streamssupported by a neuropil-like stroma. Neoplastic cellswere immunopositive for glial fibrillar acidic protein(GFAP) and oligodendrocyte transcription factor 2 (Olig2),and immunonegative for e-cadherin and pancytokeratin.Histological and immunohistochemical featureswere consistent with a high-grade astrocytoma withventricular invasion, a rare feature of astrocytic tumoursin dogs.
机译:一名13岁女德国牧羊犬waseuthanised并提交后尸体剖检7-monthhistory长时间的休息发声。破坏,3.5×1.5厘米,软红质量,正确的lateralventricle和抹去压缩相邻neuroparenchyma。肿瘤细胞与astrocyticmorphology安排在短包和streamssupportedneuropil-like基质。immunopositive胶质原纤维酸性蛋白(GFAP)和少突细胞转录因子2 (Olig2), immunonegative钙粘蛋白和pancytokeratin。免疫组织化学featureswere一致一个高档星形细胞瘤withventricular星形tumoursin的入侵,这是一种罕见的特性狗。

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